The determinant of a matrix is a scalar value that encapsulates several key properties of the matrix and the linear transformation it represents. It is a Scalar Quantity attached to a square matrix. Means with every square matric A there is associated a scalar quantity which is called the determinant of A . it is denoted as Parallel Lines on both ends of matrix A . Kindly check the link below for practical solution of Determinant of a Matrix:

Thanks a lot
Jatin